mohammad siddique asked 6 months ago

our GA160 compressor while start the compressor main drive motor is not running display screen shows starter feed back contact

1 Answers
Cas Staff answered 6 months ago


The motor is started through a star-delta switch system. (startup in star, after a few seconds, switch to delta).

There should be 3 main contactors (relais) that take care of this. These contactors have auxiliary contacts that are separate from the main (power) contacts.

These contacts provide feedback to the controller (open/closed).

If you get this error, one of 3 things is happening:

1) The contactor really is not opening/closing, so the feedback contact is correct and an error comes up.

2) The contactor is working (main contacts) but the auxiliray contacts are bad.

3) There is a wiring problem to/from the auxiliary contacts (loose contact, etc).

Please check if the contactor is actually switching or not. If it is, check the auxiliary contact with a multimeter (be careful or ask an electrictian if not 100% sure).